Method of making artificial ice.



D. H. JEWBLL. METHOD OF MAKING ARTIFICIAL ICE.

APPLICATION FILED JUNE 1s,'190.

Patented Sept. 21, 1909.. 2 SHEETS-SHEET-L 0.,12. JEWELL. METHOD OF MAKING ARTIFICIAL ICE.

APPLICATION FILED JUNE 13,1908.

Patentd Sept. 21, .1909.

QSHEEIS-SHEET 2.

' purities UNITED STATES PATENT oral en.

OMAR H. JEWELL, 0F CHICAGO, ILLINOIS,,ASSIGNOR 'IO POLAR ICE MACHINE COMPANY,

OF CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS.

METHOD OF MAKING ARTIFICIAL ICE.

Specification of Letters Patent.

Patented Sept. 21, .1909.

Application filed June 13, 1908. Serial No. 438,373.

To all whom it may concern:

lie it known that l, ()MAH ll. Jnwncn, a citizen of the United States, residing: at Chicago, in the county of (lool: and State of Illinois. have invented a. new and useful Method of Making Artificial lee, of which the following; is a. s iecifivatimi, reference heing had 'to the a(-. -oiupanyiug drawings.

My invention relates to the nainlfacture of artificial ire from raw water that is to vsay, water that. has not. been dist.illed,---a.nd it has for its object to provide an in'tproved method of treatment, by which the raw water may be frozen expeditiously and ee0 nomivally into a symmetrical block or cake of ice and under such conditions as will re sull in the iln'nlation of crystal ice free from impurities as well as from the usual. core formed by the confinement or trapping of air in the center of the ice cake. 1 accomplish this object. as illustrated in the aecour panying drawings and as lnzreinarl ter de scribed.

hat l regard as new is set forth in the claims.

It is recognized by authorities in the art of refrigeration that. in' the process of freezing water tends to purify itself, expelling not only the impurities held in suspension but also inanyof the solids held in solution, so that if raw water containing such suspended or dissolved impurities be frozen under conditions such as will permit the inn so expelled from the forming n'mss of ice as well the solids thrown out of solution by the freezing operation to separate and be deposited or removed the mass of ice when formed will be practically pure. lVlany attempt-shave been made by others. as well as by myself, to perfect, a method or mode of treatment by which pure crystal ice could be successfully produced from raw water, but. for various reasons none of such efforts have proven entirely satisfactory until by the discovery hereinafter described the obstacles heretofore encountered were overcome.

It has heretofore been recognized that by causing the water to be frozen to circulate during the freezing operation the separation. of the expelled impurities might be promoted, but, so far as I am aware, no sat.- isfactory process has heretofore been devised for maintaining such circulation of the ':Lel- .l have discovered, however, that by ;rities.

maintaining a body or zone water below the zone in which be formed and introducing air through the unfrozen water to a ate the water frozen all the objections methods may be avoided. frozen water provides a medium in which solids separated from the water during the freezing operation, as well as the impurities expelled by the forming ice, accumulate and are retained until after the ice is harvested, so that. the ice is itself free from such impul urthermrn-e, it. also-provides a. me

of unfrozen the ice is to -diu1n through which the ail-may beconl l l l l t t ties are gradually atly introduced during the freezingopealion without danger of clogging up the air pipe through the congealing of the mois- :ture contained in the air, thus mat-cine it unnecessary to dehydrate the air. '1 ns feature of maintaining an unfrozen zone below the freezing zone and initiating in such unfrozen zone a circulatory movement or ugh ration of the water is characteristic of my invention and CO1]SlLlL-.'\ JS the 0. once of my discovery. By this method the ice is formed in the upper portion of the recepta ole or can, i. e. that portion of the can lying within the freezing zone and above the unfrozen zone,- the latter being preferably a simpl downward extension of the can below tn.- brine jacket or other means employed to red ce the upper portion of the can to a freezing temperature. The result. is that the impuricollected in the bottom of the can and remain there when the ice removed.

After the freezing is completed, the ice may be ischarged by introducing water into the bot on] of the ta k and thereby floating the ice so that it rises and may beeasily removed.

In the accompanyingdrawings, in which I have illustrated a simple form of apparatus for carrying out my improved proe ess,Fignre l is a. longitudinal vertical section of my improved apparatus; Fi nQ isa cross-section on line -2-2 o Fig. 1; Fig. I; is a vertical section on line 33 of Fig. 1; Fig. 4 is a vertical section on line of Fig. lgand Fig. 5 is a perspective view of one of the bathe-plates or diaphragms which control the direction of flow of the brine.

Referring to the dra\\-'ings,6 indicates a tank or receptacle in which is placed the water to bl frozen. Asshown in Fig. 1, the

to be; incident to prior The zone of un-;

Ill)

medium to the upper receptacle, containing leaving the ower portion thereof exposed a non-freezing temperature, and llnlllltililling an unfrozen zone of water at the bottom of the receptacle tion, and introducing air into the water in such unfrozen zone to agitate the water in the receptacle. I

'14-. The method of making artificial ice, .izvhicli Inedmm to the upper portion of a suitable rece )taele containing the water leaving the lower portion thcreo i non-freezing temperature, and maintaining an unfrozen zone of water at the bottom Disclaimer "in Letters RgtentNo. 93487.2.

-934,972.-'-Omar H. Jewell, Chicago, Illi 1 To that pert of the specification portion of a suitable the water to be trozen,

to receptacle to 5. \Vlli'tll medium to the upper portion only of a Slll able receptacle contain ng agitate the water therein.

(luring the freezing oper:i

consists in applying a freezing the freezing operation. tip he frozen, v (WAR II. JE VELL.

exposed to 'itnossos:

Jom\ 'L Jaonson,

' iSQI-AIMEB;

METHOD or MAiuNo ARTIFICIAL Ion.

Patent dated September 21, 1909. Disclaimer filed May 15, 1913, by the essignee, Polar Ice Machine Company.

It hereby makes this disclaimer? 101, page 2, end the words by other means, line 102, page 2, it being the intent and purpose of. disclaimer to exclude means other than air for effecting the circulation or agitation of the water to be frozen. [Oficiai I Gazette, May 27'; 1913.]

of the receptacle during the freezing operation. and admitting air at the'bottom of the The method of making artificial ice, consists in applying a freezing the water to be frozen, and maintaining an unfrozen zone of water in said receptacle-below the form- 'ing ice (luringthefreezing operation, and agitating the water in the receptacle during which is identified by the ward either, line medium to the upper receptacle, containing leaving the ower portion thereof exposed a non-freezing temperature, and llnlllltililling an unfrozen zone of water at the bottom of the receptacle tion, and introducing air into the water in such unfrozen zone to agitate the water in the receptacle. I

'14-. The method of making artificial ice, .izvhicli Inedmm to the upper portion of a suitable rece )taele containing the water leaving the lower portion thcreo i non-freezing temperature, and maintaining an unfrozen zone of water at the bottom Disclaimer "in Letters RgtentNo. 93487.2.

-934,972.-'-Omar H. Jewell, Chicago, Illi 1 To that pert of the specification portion of a suitable the water to be trozen,

to receptacle to 5. \Vlli'tll medium to the upper portion only of a Slll able receptacle contain ng agitate the water therein.

(luring the freezing oper:i

consists in applying a freezing the freezing operation. tip he frozen, v (WAR II. JE VELL.

exposed to 'itnossos:

Jom\ 'L Jaonson,

' iSQI-AIMEB;

METHOD or MAiuNo ARTIFICIAL Ion.

Patent dated September 21, 1909. Disclaimer filed May 15, 1913, by the essignee, Polar Ice Machine Company.

It hereby makes this disclaimer? 101, page 2, end the words by other means, line 102, page 2, it being the intent and purpose of. disclaimer to exclude means other than air for effecting the circulation or agitation of the water to be frozen. [Oficiai I Gazette, May 27'; 1913.]

of the receptacle during the freezing operation. and admitting air at the'bottom of the The method of making artificial ice, consists in applying a freezing the water to be frozen, and maintaining an unfrozen zone of water in said receptacle-below the form- 'ing ice (luringthefreezing operation, and agitating the water in the receptacle during which is identified by the ward either, line Disclaimer ln Letters Eaten! No. 934,972.

934,972. Omar H. Jewell, Chicago. In.

DISCLAIMER- METHOD OF MAKING ARTIFICIAL Ice. Patent dated September 21, 1909. Disclaimer filed May 15, 1913, by the assignee, Polar Ice Machine Company.

It hereby makes this disclaimer? To that part of the specification which is identified by the word -either,' line I 101, page 2, and the words by other means, line 102, page 2, it being the intent and purpose oil this disclaimer to exclude means other than air for effecting the circulation or agitation of the water to be frozen. [Oficial Gazette, May 27, 1.913.] 

